Review and segment PSUs by natural features in Google Earth
Skill level needed: Basic/Intermediate/Advanced
Sample designs supported: 1, 2, 3, 4, 5
If your team does not have GIS skills, use this tutorial to review each selected PSU over recent satellite imagery and manually segment PSUs with exceptionally large populations before fieldwork. Reviewing each PSU before fieldwork is recommended for all gridded population surveys, though segmentation might be skipped for Designs 3 (random-walk) and 4 (building SRS). Design 6 specifically requires segmentation of PSUs by their component grid cells in a GIS software (see Tutorial B4).